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Finding the Fourth Proportional to 242,492.13, 363,738.84 and 84,720.55

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Solution

The fourth proportional to 242,492.13, 363,738.84 and 84,720.55 is: 127,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,492.13 : 363,738.84 = 84,720.55 : x
  2. Step 2: Convert to fraction form
    242,492.13/363,738.84 = 84,720.55/x
  3. Step 3: Cross multiply
    242,492.13x = 363,738.84 × 84,720.55
  4. Step 4: Simplify right side
    242,492.13x = 30,816,154,581.16
  5. Step 5: Solve for x
    x = 30,816,154,581.16/242,492.13
  6. Step 6: Final answer
    x = 127,081.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.